/* roulang page: index */
:root {
            --primary: #C8102E;
            --primary-dark: #A00D25;
            --accent: #F2A900;
            --dark: #1A1A2E;
            --bg: #FAF7F2;
            --card: #FFFFFF;
            --border: #EDE8E0;
            --muted-bg: #F0EDE8;
            --text-body: #3A3740;
            --text-muted: #78717A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
            --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --section-pad: 80px 0;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 247, 242, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-left: 2px;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
             {
                /* allow horizontal scroll on mobile */
            }
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .nav-chip:hover {
            background: #EDE8E0;
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #1A1A2E 0%, #2D1B2E 40%, #1A1A2E 100%);
            padding: 72px 0 56px;
            position: relative;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            align-items: center;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.25);
            animation: slow-spin 60s linear infinite;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            bottom: -120px;
            left: -60px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            border: 2px solid rgba(200, 16, 46, 0.2);
        }
        @keyframes slow-spin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .hero-content p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.82);
            line-height: 1.9;
            margin-bottom: 28px;
            max-width: 540px;
        }

        .hero-bullets {
            list-style: none;
            margin: 0 0 28px;
            padding: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .hero-bullets li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
            background: rgba(255, 255, 255, 0.08);
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .hero-bullets li::before {
            content: "●";
            color: var(--accent);
            font-size: 10px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
            margin-bottom: 20px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 28px rgba(200, 16, 46, 0.35);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 24px;
            border-radius: var(--radius-btn);
            background: transparent;
            color: rgba(255, 255, 255, 0.9);
            font-weight: 500;
            font-size: 15px;
            border: 1.5px solid rgba(255, 255, 255, 0.35);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.6);
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            flex-wrap: wrap;
        }
        .hero-trust span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust span::before {
            content: "✓";
            color: var(--accent);
            font-weight: 700;
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .hero-image-wrap {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 20px 48px rgba(0, 0, 0, 0.3);
            width: 100%;
            max-width: 480px;
        }
        .hero-image-wrap img {
            width: 100%;
            height: auto;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .hero-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(26, 26, 46, 0.85), transparent);
            padding: 28px 20px 16px;
            color: #fff;
            font-size: 13px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-image-overlay span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Section base */
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background: #fff;
        }
        .section-deep {
            background: var(--dark);
            color: #fff;
        }
        .section-head {
            margin-bottom: 36px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.35;
            letter-spacing: 0.3px;
        }
        .section-deep .section-head h2 {
            color: #fff;
        }
        .section-head p {
            margin-top: 10px;
            font-size: 16px;
            color: var(--text-muted);
            max-width: 720px;
        }
        .section-deep .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-tag {
            display: inline-block;
            padding: 4px 12px;
            background: #FDF3E0;
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-deep .section-tag {
            background: rgba(242, 169, 0, 0.15);
            color: var(--accent);
        }

        /* Metric cards */
        .metric-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .metric-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.25);
            transform: translateY(-2px);
        }
        .metric-value {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-num);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }
        .metric-label {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 600;
            margin-top: 6px;
        }
        .metric-desc {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Card grid */
        .card-grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .service-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .service-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.25);
            transform: translateY(-3px);
        }
        .service-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: #FDF3E0;
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
        }
        .service-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.4;
        }
        .service-card p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* Comparison */
        .compare-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .compare-panel {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
        }
        .compare-panel.after {
            border-color: rgba(200, 16, 46, 0.4);
            background: #FFF8F5;
        }
        .compare-panel h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--dark);
        }
        .compare-panel.after h3 {
            color: var(--primary);
        }
        .compare-list {
            list-style: none;
            padding: 0;
        }
        .compare-list li {
            display: flex;
            gap: 10px;
            font-size: 15px;
            padding: 8px 0;
            border-bottom: 1px solid #f5f2ed;
            line-height: 1.6;
        }
        .compare-list li:last-child {
            border-bottom: none;
        }
        .compare-list li::before {
            content: "✕";
            color: #999;
            font-weight: 700;
            flex-shrink: 0;
        }
        .compare-panel.after .compare-list li::before {
            content: "✓";
            color: var(--primary);
        }

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 28px;
        }
        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 6px;
            bottom: 6px;
            width: 2px;
            background: linear-gradient(to bottom, var(--primary), var(--accent));
            border-radius: 2px;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 24px 20px;
        }
        .timeline-item::before {
            content: "";
            position: absolute;
            left: -26px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid #fff;
            box-shadow: 0 0 0 2px var(--primary);
            z-index: 1;
        }
        .timeline-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
        }
        .timeline-item .timeline-date {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 15px;
            color: var(--text-body);
            margin-top: 4px;
            line-height: 1.7;
        }

        /* News list */
        .news-list-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 24px;
        }
        .news-item {
            display: flex;
            gap: 16px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .news-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }
        .news-thumb {
            width: 140px;
            height: 88px;
            border-radius: 10px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--muted-bg);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .news-meta {
            display: flex;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            align-items: center;
            flex-wrap: wrap;
        }
        .news-tag {
            padding: 3px 10px;
            background: #FDF3E0;
            color: var(--accent);
            border-radius: var(--radius-btn);
            font-size: 12px;
            font-weight: 500;
        }
        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            margin-top: 12px;
            transition: all 0.25s ease;
        }
        .more-link:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .hot-list {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
        }
        .hot-list h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid #FDF3E0;
        }
        .hot-item {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            padding: 10px 0;
            border-bottom: 1px solid #f5f2ed;
            font-size: 14px;
            line-height: 1.5;
        }
        .hot-item:last-child {
            border-bottom: none;
        }
        .hot-rank {
            font-weight: 800;
            color: var(--accent);
            font-size: 16px;
            flex-shrink: 0;
            width: 24px;
        }

        /* Guarantee */
        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-card);
            padding: 20px 16px;
            transition: all 0.25s ease;
        }
        .guarantee-item:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(242, 169, 0, 0.4);
        }
        .guarantee-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 16px;
            flex-shrink: 0;
        }
        .guarantee-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }
        .guarantee-item p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--dark);
            transition: all 0.25s ease;
            user-select: none;
            gap: 12px;
        }
        .faq-question:hover {
            background: #FFF8F5;
        }
        .faq-question.active {
            color: var(--primary);
            font-weight: 700;
        }
        .faq-arrow {
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: var(--text-muted);
        }
        .faq-question.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            padding: 0 20px 16px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
            display: none;
        }
        .faq-answer.open {
            display: block;
        }

        /* Form */
        .form-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 36px 28px;
            box-shadow: var(--shadow-sm);
            max-width: 560px;
            margin: 0 auto;
        }
        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .form-card p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--text-body);
            margin-bottom: 6px;
        }
        .form-input {
            width: 100%;
            padding: 12px 16px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: var(--muted-bg);
            font-size: 15px;
            transition: all 0.25s ease;
            color: var(--dark);
        }
        .form-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.12);
            background: #fff;
        }
        .form-submit {
            width: 100%;
            padding: 14px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            cursor: pointer;
            transition: all 0.25s ease;
            margin-top: 6px;
        }
        .form-submit:hover {
            background: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(200, 16, 46, 0.3);
            transform: translateY(-1px);
        }

        /* Brand intro */
        .brand-intro-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .brand-intro-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 16px;
        }
        .brand-intro-text p {
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.9;
            margin-bottom: 12px;
        }
        .brand-intro-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
        }
        .brand-intro-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            background: #FDF3E0;
            color: var(--accent);
            font-size: 14px;
            font-weight: 500;
            transition: all 0.25s ease;
            cursor: pointer;
            border: 1px solid transparent;
        }
        .tag-chip:hover {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        /* User cards */
        .user-card-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .user-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 18px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }
        .user-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
            transform: translateY(-2px);
        }
        .user-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: #FDF3E0;
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            margin: 0 auto 12px;
        }
        .user-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
        }
        .user-card .user-field {
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            margin: 4px 0;
        }
        .user-card p {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Topic cards */
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .topic-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.25);
            transform: translateY(-3px);
        }
        .topic-cover {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--muted-bg);
        }
        .topic-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .topic-card:hover .topic-cover img {
            transform: scale(1.04);
        }
        .topic-body {
            padding: 18px 20px;
        }
        .topic-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 6px;
        }
        .topic-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 8px;
        }
        .topic-meta {
            font-size: 12px;
            color: var(--accent);
            font-weight: 600;
        }

        /* Bottom CTA bar */
        .bottom-cta {
            background: linear-gradient(135deg, var(--dark) 0%, #2D1B2E 60%, var(--dark) 100%);
            padding: 48px 0;
            text-align: center;
            border-radius: 20px;
            margin-bottom: 40px;
            position: relative;
            overflow: hidden;
        }
        .bottom-cta::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.3);
            animation: slow-spin 45s linear infinite;
        }
        .bottom-cta h3 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .bottom-cta p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .bottom-cta .btn-primary {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 48px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.8;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            padding: 5px 0;
            transition: all 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 36px;
            }
            .hero-image-wrap {
                max-width: 100%;
            }
            .metric-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .user-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .news-list-layout {
                grid-template-columns: 1fr;
            }
            .brand-intro-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
                gap: 10px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-chips {
                gap: 4px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 12px;
            }
            .hero-section {
                padding: 40px 0 32px;
                min-height: auto;
            }
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content p {
                font-size: 15px;
            }
            .hero-bullets li {
                font-size: 12px;
                padding: 6px 10px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 11px 18px;
                font-size: 13px;
            }
            .section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .card-grid-3 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .compare-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .guarantee-grid {
                grid-template-columns: 1fr;
            }
            .user-card-grid {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .metric-grid {
                gap: 12px;
            }
            .metric-value {
                font-size: 28px;
            }
            .news-thumb {
                width: 100px;
                height: 68px;
            }
            .form-card {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .bottom-cta h3 {
                font-size: 22px;
            }
            .bottom-cta p {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .metric-card {
                padding: 16px 12px;
            }
            .metric-value {
                font-size: 24px;
            }
            .metric-label {
                font-size: 12px;
            }
            .metric-desc {
                font-size: 11px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                font-size: 13px;
                padding: 0 16px 14px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #C8102E;
  --primary-dark: #A00D25;
  --accent: #F2A900;
  --dark: #1A1A2E;
  --bg: #FAF7F2;
  --card: #FFFFFF;
  --border: #EDE8E0;
  --muted-bg: #F0EDE8;
  --text-body: #3A3740;
  --text-muted: #78717A;
  --radius-card: 14px;
  --radius-btn: 999px;
  --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
  --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
  --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  --font-num: 'Inter', system-ui, sans-serif;
  --section-pad: 72px 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  line-height: 1.8;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

a:hover {
  color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button,
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: 0.5px;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo .logo-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
}

.logo .logo-sub {
  font-weight: 400;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-left: 2px;
}

.nav-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
  flex-wrap: nowrap;
}

.nav-chips::-webkit-scrollbar {
  display: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: var(--radius-btn);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  background: #F5F2ED;
  border: 1px solid transparent;
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.25s ease;
}

.nav-chip:hover {
  background: #EDE8E0;
  color: var(--primary);
}

.nav-chip.active {
  background: var(--primary);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.25s ease;
  border: none;
  cursor: pointer;
}

.nav-cta:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
}

/* Page Header */
.page-header {
  background: linear-gradient(135deg, #1A1A2E 0%, #2D1B2E 100%);
  padding: 56px 0 40px;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -40px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px dashed rgba(242, 169, 0, 0.2);
}

.page-header-inner {
  position: relative;
  z-index: 1;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 18px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.75);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .sep {
  color: rgba(255,255,255,0.4);
}

.page-header h1 {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}

.page-header p {
  font-size: 16px;
  color: rgba(255,255,255,0.82);
  max-width: 720px;
  line-height: 1.8;
}

/* Section Base */
.section {
  padding: var(--section-pad);
}

.section-alt {
  background: var(--card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
  line-height: 1.3;
}

.section-sub {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

/* Filter Chips */
.filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  border-radius: var(--radius-btn);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-body);
  background: #F5F2ED;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all 0.25s ease;
}

.filter-chip:hover {
  background: #EDE8E0;
  color: var(--primary);
}

.filter-chip.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  font-weight: 600;
}

/* Article List Layout */
.article-list-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: start;
}

.article-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.article-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  padding: 16px;
  transition: all 0.3s ease;
}

.article-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(200, 16, 46, 0.25);
  transform: translateY(-2px);
}

.article-thumb {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: 10px;
  background: var(--muted-bg);
}

.article-body {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.article-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.45;
  margin: 0;
}

.article-item:hover .article-body h3 {
  color: var(--primary);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

.article-tag {
  display: inline-flex;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 500;
  background: #FDF3E0;
  color: #C77F00;
}

.article-summary {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin: 0;
}

/* Hot Sidebar */
.hot-sidebar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 90px;
}

.hot-sidebar-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hot-sidebar-title .hot-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  animation: pulse-dot 1.8s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hot-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  transition: all 0.2s ease;
}

.hot-item:last-child {
  border-bottom: none;
}

.hot-item:hover h4 {
  color: var(--primary);
}

.hot-rank {
  font-family: var(--font-num);
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  min-width: 28px;
  line-height: 1.4;
}

.hot-content h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.5;
  margin: 0 0 4px;
}

.hot-content .hot-meta {
  font-size: 12px;
  color: var(--text-muted);
}

/* Topic Cards */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.topic-card-horizontal {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.3s ease;
}

.topic-card-horizontal:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(200, 16, 46, 0.3);
}

.topic-card-horizontal img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}

.topic-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.topic-card-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.4;
  margin: 0;
}

.topic-card-body p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
  margin: 0;
}

.topic-card-body .topic-count {
  font-size: 13px;
  color: var(--text-muted);
}

/* Mini Stats */
.stats-mini-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.stat-mini-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-sm);
}

.stat-mini-number {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}

.stat-mini-label {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Subscribe CTA */
.subscribe-cta {
  background: var(--dark);
  border-radius: var(--radius-card);
  padding: 36px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.subscribe-cta-left h3 {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.subscribe-cta-left p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin: 0;
}

.subscribe-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.subscribe-form input {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 10px;
  padding: 12px 16px;
  color: #fff;
  min-width: 260px;
  outline: none;
  transition: all 0.25s ease;
}

.subscribe-form input::placeholder {
  color: rgba(255,255,255,0.6);
}

.subscribe-form input:focus {
  border-color: var(--accent);
  background: rgba(255,255,255,0.15);
  box-shadow: 0 0 0 3px rgba(242, 169, 0, 0.15);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.25s ease;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(200, 16, 46, 0.3);
}

/* Editor Picks */
.editor-picks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.editor-pick-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.editor-pick-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.editor-pick-card h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin: 0 0 8px;
}

.editor-pick-card p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

.pick-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--muted-bg);
  color: var(--primary);
  font-size: 16px;
  margin-top: 12px;
}

/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 860px;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
  overflow: hidden;
  transition: all 0.2s ease;
}

.faq-item:hover {
  border-color: rgba(200, 16, 46, 0.3);
}

.faq-question {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  color: var(--dark);
  transition: color 0.2s ease;
  gap: 12px;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question .faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: transform 0.25s ease;
}

.faq-item.open .faq-question .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  color: var(--text-body);
  font-size: 14px;
  line-height: 1.75;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 16px;
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.8);
  padding: 56px 0 32px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 320px;
  color: rgba(255,255,255,0.65);
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 12px;
}

.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  padding: 4px 0;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--accent);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
}

.footer-bottom a {
  color: rgba(255,255,255,0.7);
}

.footer-bottom a:hover {
  color: var(--accent);
}

/* Responsive */
@media (max-width: 1024px) {
  .article-list-grid {
    grid-template-columns: 1fr;
  }
  .hot-sidebar {
    position: static;
  }
  .topic-grid {
    grid-template-columns: 1fr;
  }
  .editor-picks {
    grid-template-columns: 1fr;
  }
  .stats-mini-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-header h1 {
    font-size: 30px;
  }
}

@media (max-width: 768px) {
  .site-header {
    padding: 10px 0;
  }
  .header-inner {
    gap: 12px;
  }
  .nav-chips {
    order: 3;
    width: 100%;
    padding-top: 4px;
  }
  .nav-cta {
    order: 2;
  }
  .article-item {
    grid-template-columns: 1fr;
  }
  .article-thumb {
    aspect-ratio: 16/9;
  }
  .subscribe-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .subscribe-form input {
    min-width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .page-header h1 {
    font-size: 26px;
  }
}

@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .stats-mini-grid {
    grid-template-columns: 1fr;
  }
  .topic-card-horizontal {
    grid-template-columns: 1fr;
  }
  .topic-card-horizontal img {
    aspect-ratio: 16/9;
  }
  .filter-chips {
    gap: 6px;
  }
}

/* roulang page: category2 */
:root {
            --primary: #C8102E;
            --primary-dark: #A00D25;
            --accent: #F2A900;
            --dark: #1A1A2E;
            --bg: #FAF7F2;
            --card: #FFFFFF;
            --border: #EDE8E0;
            --muted-bg: #F0EDE8;
            --text-body: #3A3740;
            --text-muted: #78717A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
            --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --section-pad: 80px 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 247, 242, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }

        .logo .logo-sub {
            font-weight: 400;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-left: 2px;
        }

        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
        }

        .nav-chips::-webkit-scrollbar {
            display: none;
        }

        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .nav-chip:hover {
            background: #EDE8E0;
            color: var(--primary);
        }

        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--primary);
        }

        .breadcrumb .separator {
            color: #C5BDB5;
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--dark);
            font-weight: 600;
        }

        /* Category Header */
        .cat-header {
            padding: 48px 0 40px;
            background: linear-gradient(180deg, #fff 0%, var(--bg) 100%);
            border-bottom: 1px solid var(--border);
        }

        .cat-header h1 {
            font-size: 40px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .cat-header .cat-desc {
            font-size: 16px;
            color: var(--text-body);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Filter chips row */
        .filter-row {
            padding: 24px 0 8px;
        }

        .filter-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            align-items: center;
        }

        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 500;
            background: #FDF3E0;
            color: #B25E00;
            border: 1px solid #F0D9A8;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
        }

        .filter-chip:hover {
            background: #FFF7E6;
            border-color: var(--accent);
            color: #8F4C00;
        }

        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.2);
        }

        /* Card grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .culture-card {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .culture-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.3);
            transform: translateY(-2px);
        }

        .culture-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--muted-bg);
            position: relative;
        }

        .culture-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .culture-card:hover .card-img img {
            transform: scale(1.04);
        }

        .culture-card .card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .culture-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: #B25E00;
            background: #FDF3E0;
            border-radius: 999px;
            padding: 3px 10px;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .culture-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color 0.25s ease;
        }

        .culture-card:hover h3 {
            color: var(--primary);
        }

        .culture-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

        .culture-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        .culture-card .card-meta .date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* Hot list */
        .hot-row {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 32px;
            align-items: start;
        }

        .hot-list {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }

        .hot-list .hot-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            transition: all 0.2s ease;
        }

        .hot-list .hot-item:last-child {
            border-bottom: none;
        }

        .hot-list .hot-item:hover {
            padding-left: 6px;
        }

        .hot-rank {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #FDF3E0;
            color: #B25E00;
            font-weight: 700;
            font-size: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .hot-rank.top1 {
            background: var(--primary);
            color: #fff;
        }

        .hot-rank.top2 {
            background: var(--accent);
            color: #fff;
        }

        .hot-rank.top3 {
            background: #E8A34D;
            color: #fff;
        }

        .hot-item .hot-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 2px;
            transition: color 0.2s ease;
        }

        .hot-item:hover .hot-info h4 {
            color: var(--primary);
        }

        .hot-item .hot-info span {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Timeline */
        .timeline-section {
            background: var(--dark);
            padding: 64px 0;
            border-radius: 20px;
            margin: 0 24px;
        }

        .timeline-section .container {
            max-width: 1000px;
        }

        .timeline-section h2 {
            color: #fff;
        }

        .timeline {
            display: grid;
            grid-template-columns: 1fr;
            gap: 0;
            position: relative;
            padding-left: 32px;
        }

        .timeline::before {
            content: "";
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: rgba(242, 169, 0, 0.4);
        }

        .timeline-item {
            position: relative;
            padding: 16px 0 16px 28px;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -28px;
            top: 22px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid var(--dark);
            box-shadow: 0 0 0 2px rgba(242, 169, 0, 0.6);
        }

        .timeline-item .timeline-year {
            font-family: var(--font-num);
            font-size: 18px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }

        .timeline-item .timeline-text {
            font-size: 14px;
            color: #E0DCE5;
            line-height: 1.7;
        }

        /* Topic large cards */
        .topic-cards {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 28px;
        }

        .topic-card {
            background: var(--card);
            border-radius: 16px;
            border: 1px solid var(--border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: rgba(200, 16, 46, 0.25);
        }

        .topic-card .topic-img {
            aspect-ratio: 21/9;
            overflow: hidden;
            background: var(--muted-bg);
        }

        .topic-card .topic-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .topic-card:hover .topic-img img {
            transform: scale(1.03);
        }

        .topic-card .topic-body {
            padding: 22px 26px 26px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card .topic-tag {
            font-size: 12px;
            font-weight: 500;
            color: var(--primary);
            background: rgba(200, 16, 46, 0.08);
            border-radius: 999px;
            padding: 3px 10px;
            display: inline-block;
            align-self: flex-start;
            margin-bottom: 10px;
        }

        .topic-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 12px;
        }

        .topic-card .topic-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            align-items: center;
            border-top: 1px solid var(--border);
            padding-top: 12px;
        }

        /* Stats mini */
        .stats-mini-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .stat-mini {
            background: var(--card);
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }

        .stat-mini:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }

        .stat-mini .stat-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            line-height: 1.2;
        }

        .stat-mini .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: linear-gradient(135deg, #FFF 0%, #FFF8F0 100%);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .subscribe-cta h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .subscribe-cta p {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }

        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 240px;
            padding: 12px 20px;
            border-radius: 999px;
            border: 1px solid var(--border);
            background: var(--bg);
            font-size: 14px;
            color: var(--text-body);
            transition: all 0.25s ease;
        }

        .subscribe-form input[type="email"]:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(200, 16, 46, 0.12);
            background: #fff;
        }

        .subscribe-btn {
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.25s ease;
        }

        .subscribe-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
            color: #fff;
        }

        /* FAQ */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 10px;
            background: var(--card);
            overflow: hidden;
            transition: all 0.25s ease;
        }

        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.25);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            background: transparent;
            border: none;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: color 0.25s ease;
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question .faq-icon {
            font-size: 20px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            line-height: 1;
        }

        .faq-item.open .faq-question {
            color: var(--primary);
            font-weight: 700;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            margin: 0;
        }

        /* Section titles */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: -0.3px;
            margin-bottom: 8px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: var(--dark);
            color: #D5D1DA;
            padding: 56px 0 28px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
            margin-top: 14px;
            color: #B5B0BA;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: #B5B0BA;
            padding: 5px 0;
            transition: color 0.2s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: #8F8996;
        }

        .footer-bottom a {
            color: #B5B0BA;
            transition: color 0.2s ease;
        }

        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom span {
            white-space: nowrap;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-row {
                grid-template-columns: 1fr;
            }
            .topic-cards {
                grid-template-columns: 1fr;
            }
            .stats-mini-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                padding: 10px 0;
            }
            .header-inner {
                gap: 10px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
                border-radius: 8px;
            }
            .logo .logo-sub {
                font-size: 10px;
                letter-spacing: 1.5px;
            }
            .nav-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 12px;
            }
            .cat-header {
                padding: 32px 0 28px;
            }
            .cat-header h1 {
                font-size: 28px;
            }
            .cat-header .cat-desc {
                font-size: 14px;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .stats-mini-row {
                grid-template-columns: 1fr;
            }
            .timeline-section {
                margin: 0 12px;
                padding: 40px 0;
                border-radius: 14px;
            }
            .subscribe-cta {
                padding: 32px 20px;
            }
            .subscribe-cta h2 {
                font-size: 22px;
            }
            .subscribe-form input[type="email"] {
                min-width: 100%;
            }
            .section-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .cat-header h1 {
                font-size: 24px;
            }
            .filter-chips {
                gap: 6px;
            }
            .filter-chip {
                padding: 5px 12px;
                font-size: 12px;
            }
            .culture-card .card-body {
                padding: 16px 16px 18px;
            }
            .culture-card h3 {
                font-size: 15px;
            }
            .topic-card .topic-body {
                padding: 16px 18px 20px;
            }
            .topic-card h3 {
                font-size: 16px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer p {
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #C8102E;
            --primary-dark: #A00D25;
            --accent: #F2A900;
            --dark: #1A1A2E;
            --bg: #FAF7F2;
            --card: #FFFFFF;
            --border: #EDE8E0;
            --muted-bg: #F0EDE8;
            --text-body: #3A3740;
            --text-muted: #78717A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
            --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --section-pad: 80px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 247, 242, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo .logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 9px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 800;
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 11px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-left: 2px;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
            flex-shrink: 1;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 14px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: #EDE8E0;
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }
        .page-header {
            background: var(--dark);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .page-header::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.2);
            animation: slow-spin 50s linear infinite;
        }
        @keyframes slow-spin {
            to {
                transform: rotate(360deg);
            }
        }
        .page-header::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            border: 2px solid rgba(200, 16, 46, 0.18);
        }
        .page-header-inner {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            opacity: 0.5;
        }
        .page-header h1 {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .page-header .page-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 720px;
            line-height: 1.8;
        }
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: var(--card);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 640px;
        }
        .filter-chips {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: var(--muted-bg);
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .filter-chip:hover {
            background: var(--border);
            color: var(--primary);
        }
        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }
        .dynamic-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .dynamic-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 22px 24px;
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        .dynamic-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.3);
        }
        .avatar {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, #8A0A20 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            flex-shrink: 0;
            overflow: hidden;
        }
        .dynamic-body {
            flex: 1;
            min-width: 0;
        }
        .dynamic-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 8px;
        }
        .dynamic-author {
            font-weight: 600;
            font-size: 14px;
            color: var(--dark);
        }
        .dynamic-time {
            font-size: 12px;
            color: var(--text-muted);
        }
        .dynamic-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: var(--radius-btn);
            font-size: 11px;
            font-weight: 500;
            background: #FDF3E0;
            color: var(--accent);
        }
        .dynamic-text {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-body);
            margin-bottom: 14px;
        }
        .dynamic-thumb {
            width: 100%;
            max-width: 200px;
            border-radius: 10px;
            overflow: hidden;
            margin-top: 8px;
            flex-shrink: 0;
            display: none;
        }
        .dynamic-thumb.show {
            display: block;
        }
        .dynamic-thumb img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .dynamic-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .dynamic-actions span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            cursor: pointer;
            transition: color 0.2s ease;
        }
        .dynamic-actions span:hover {
            color: var(--primary);
        }
        .hot-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }
        .hot-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        .hot-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.3);
            transform: translateY(-2px);
        }
        .hot-rank {
            font-family: var(--font-num);
            font-size: 28px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            flex-shrink: 0;
        }
        .hot-info h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .hot-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .creator-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .creator-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 18px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
        }
        .creator-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.3);
            transform: translateY(-3px);
        }
        .creator-avatar {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 22px;
            margin: 0 auto 14px;
        }
        .creator-name {
            font-weight: 700;
            font-size: 16px;
            color: var(--dark);
            margin-bottom: 4px;
        }
        .creator-field {
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            margin-bottom: 6px;
        }
        .creator-stats {
            font-size: 12px;
            color: var(--text-muted);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }
        .stat-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .stat-number {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }
        .join-card {
            background: var(--dark);
            border-radius: var(--radius-card);
            padding: 40px 36px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .join-card::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -40px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.2);
        }
        .join-card .join-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .join-card .join-text p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 480px;
        }
        .join-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .join-form input {
            padding: 11px 18px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            min-width: 240px;
            transition: all 0.25s ease;
        }
        .join-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .join-form input:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.15);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 11px 24px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.3);
            color: #fff;
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.3);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            cursor: pointer;
            font-weight: 600;
            color: var(--dark);
            font-size: 15px;
            gap: 12px;
            user-select: none;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .arrow {
            flex-shrink: 0;
            transition: transform 0.25s ease;
            font-size: 18px;
            color: var(--text-muted);
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item.open .faq-question {
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 20px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
        }
        .faq-answer p {
            padding-bottom: 16px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-mark {
            background: var(--primary);
        }
        .footer-brand .logo .logo-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 10px;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .nav-chip {
                padding: 7px 12px;
                font-size: 12px;
            }
            .nav-cta {
                padding: 8px 14px;
                font-size: 12px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 28px;
                height: 28px;
                font-size: 14px;
            }
            .hot-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .creator-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: nowrap;
                gap: 10px;
            }
            .nav-chips {
                overflow-x: auto;
                flex: 1;
                min-width: 0;
            }
            .nav-chip {
                padding: 6px 10px;
                font-size: 11px;
            }
            .nav-cta {
                padding: 7px 12px;
                font-size: 11px;
            }
            .logo .logo-sub {
                display: none;
            }
            .page-header {
                padding: 36px 0 32px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .page-header .page-desc {
                font-size: 14px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .dynamic-item {
                flex-direction: column;
                gap: 12px;
                padding: 18px;
            }
            .dynamic-thumb {
                max-width: 100%;
            }
            .hot-row {
                grid-template-columns: 1fr;
            }
            .creator-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-number {
                font-size: 24px;
            }
            .join-card {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 20px;
            }
            .join-form {
                width: 100%;
            }
            .join-form input {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .filter-chip {
                padding: 6px 12px;
                font-size: 12px;
            }
            .dynamic-item {
                padding: 14px;
            }
            .avatar {
                width: 40px;
                height: 40px;
                font-size: 16px;
            }
            .creator-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 20px;
            }
            .btn-primary {
                width: 100%;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #C8102E;
            --primary-dark: #A00D25;
            --accent: #F2A900;
            --dark: #1A1A2E;
            --bg: #FAF7F2;
            --card: #FFFFFF;
            --border: #EDE8E0;
            --muted-bg: #F0EDE8;
            --text-body: #3A3740;
            --text-muted: #78717A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
            --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --section-pad: 80px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 247, 242, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-left: 2px;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .nav-chip:hover {
            background: #EDE8E0;
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background: #fff;
        }
        .section-dark {
            background: var(--dark);
            color: #fff;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
            max-width: 680px;
        }
        .card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            overflow: hidden;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background: transparent;
            border: 1.5px solid var(--text-body);
            color: var(--text-body);
            font-size: 15px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--muted-bg);
            border-color: var(--primary);
            color: var(--primary);
        }
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: var(--radius-btn);
            background: #FDF3E0;
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            white-space: nowrap;
        }
        .chip-filter {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .chip-filter:hover {
            background: #EDE8E0;
            color: var(--primary);
        }
        .chip-filter.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #bbb;
        }
        .event-card {
            display: grid;
            grid-template-columns: 280px 1fr;
            gap: 0;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            overflow: hidden;
            margin-bottom: 24px;
        }
        .event-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }
        .event-card-image {
            position: relative;
            min-height: 200px;
        }
        .event-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .event-card-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .event-progress {
            height: 6px;
            background: var(--muted-bg);
            border-radius: 3px;
            overflow: hidden;
            margin: 12px 0;
        }
        .event-progress-bar {
            height: 100%;
            border-radius: 3px;
            background: var(--primary);
            transition: width 0.4s ease;
        }
        .event-status {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-btn);
        }
        .event-status.open {
            background: #E8F5E9;
            color: #2E7D32;
        }
        .event-status.progress {
            background: #FDF3E0;
            color: #E65100;
        }
        .event-status.closed {
            background: #F5F5F5;
            color: #9E9E9E;
        }
        .stat-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 24px 20px;
            text-align: center;
            transition: all 0.3s ease;
        }
        .stat-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
            transform: translateY(-2px);
        }
        .stat-value {
            font-family: var(--font-num);
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 10px;
            margin-bottom: 10px;
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            background: transparent;
            border: none;
            text-align: left;
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question.active {
            color: var(--primary);
            font-weight: 700;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
        }
        .faq-answer-inner {
            padding: 0 0 18px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }
        .faq-arrow {
            transition: transform 0.3s ease;
            font-size: 14px;
            color: var(--text-muted);
        }
        .faq-question.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .hotspot-card {
            display: flex;
            align-items: center;
            gap: 14px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 14px 16px;
            transition: all 0.25s ease;
            cursor: pointer;
        }
        .hotspot-card:hover {
            border-color: rgba(200, 16, 46, 0.2);
            box-shadow: var(--shadow-sm);
        }
        .hotspot-rank {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 800;
            color: var(--accent);
            min-width: 36px;
            text-align: center;
        }
        .topic-card {
            display: grid;
            grid-template-columns: 220px 1fr;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }
        .topic-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .topic-card-body {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .input-field {
            width: 100%;
            padding: 12px 16px;
            background: var(--muted-bg);
            border: 1.5px solid transparent;
            border-radius: 10px;
            font-size: 14px;
            color: var(--text-body);
            transition: all 0.25s ease;
        }
        .input-field:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.15);
            background: #fff;
        }
        .form-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 16px;
            box-shadow: 0 4px 16px rgba(26, 26, 46, 0.08);
            padding: 32px;
        }
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.85);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 12px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 8px;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            gap: 16px 24px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            align-items: center;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .event-card {
                grid-template-columns: 220px 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                gap: 12px;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                padding-bottom: 4px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .event-card {
                grid-template-columns: 1fr;
                margin-bottom: 16px;
            }
            .event-card-image {
                min-height: 160px;
            }
            .topic-card {
                grid-template-columns: 1fr;
            }
            .topic-card-image {
                min-height: 140px;
            }
            .topic-card-image img {
                height: 140px;
                object-fit: cover;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .stat-value {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 18px;
            }
            .logo .logo-mark {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .section-title {
                font-size: 20px;
            }
            .chip-filter {
                padding: 6px 12px;
                font-size: 12px;
            }
            .faq-question {
                font-size: 13px;
                padding: 12px 14px;
            }
            .form-card {
                padding: 20px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #C8102E;
            --primary-dark: #A00D25;
            --accent: #F2A900;
            --dark: #1A1A2E;
            --bg: #FAF7F2;
            --card: #FFFFFF;
            --border: #EDE8E0;
            --muted-bg: #F0EDE8;
            --text-body: #3A3740;
            --text-muted: #78717A;
            --radius-card: 14px;
            --radius-btn: 999px;
            --shadow-sm: 0 1px 3px rgba(26, 26, 46, 0.05);
            --shadow-hover: 0 8px 24px rgba(200, 16, 46, 0.10);
            --font-sans: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            --font-num: 'Inter', system-ui, sans-serif;
            --section-pad: 72px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: var(--font-sans);
            line-height: 1.8;
            color: var(--text-body);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }
        main {
            flex: 1;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        select:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(250, 247, 242, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo .logo-mark {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 800;
        }
        .logo .logo-sub {
            font-weight: 400;
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 2px;
            margin-left: 2px;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 6px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
            flex-wrap: nowrap;
            flex: 1;
            justify-content: center;
            min-width: 0;
        }
        .nav-chips::-webkit-scrollbar {
            display: none;
        }
        .nav-chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid transparent;
            white-space: nowrap;
            cursor: pointer;
            transition: all 0.25s ease;
            flex-shrink: 0;
        }
        .nav-chip:hover {
            background: #EDE8E0;
            color: var(--primary);
        }
        .nav-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            box-shadow: 0 2px 8px rgba(200, 16, 46, 0.25);
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            white-space: nowrap;
            transition: all 0.25s ease;
            border: none;
            cursor: pointer;
            flex-shrink: 0;
        }
        .nav-cta:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.25);
        }
        /* Category page header */
        .category-header {
            background: linear-gradient(135deg, #1A1A2E 0%, #2D1B2E 40%, #1A1A2E 100%);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }
        .category-header::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.25);
            animation: slow-spin 55s linear infinite;
        }
        .category-header::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -40px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            border: 2px solid rgba(200, 16, 46, 0.2);
        }
        @keyframes slow-spin {
            from {
                transform: rotate(0deg);
            }
            to {
                transform: rotate(360deg);
            }
        }
        .category-header-inner {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.25s ease;
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.4);
        }
        .breadcrumb .current {
            color: #fff;
            font-weight: 600;
        }
        .category-header h1 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            line-height: 1.25;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .category-header p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 720px;
            line-height: 1.8;
        }
        /* Section base */
        .section {
            padding: var(--section-pad);
        }
        .section-alt {
            background: #fff;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 8px;
        }
        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
            line-height: 1.7;
        }
        /* Filter chips */
        .filter-row {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 32px;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: 7px 16px;
            border-radius: var(--radius-btn);
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            background: #F5F2ED;
            border: 1px solid var(--border);
            cursor: pointer;
            transition: all 0.25s ease;
        }
        .filter-chip:hover {
            background: #EDE8E0;
        }
        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-color: var(--primary);
        }
        /* Step guide cards */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
        }
        .step-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.25);
            transform: translateY(-2px);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 16px;
            font-family: var(--font-num);
        }
        .step-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .step-card p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .step-card .step-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--accent);
            background: #FDF3E0;
            border-radius: var(--radius-btn);
            padding: 4px 10px;
            font-weight: 500;
        }
        /* Hot list */
        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }
        .hot-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.2);
        }
        .hot-rank {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: #FDF3E0;
            color: var(--accent);
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            font-family: var(--font-num);
        }
        .hot-rank.top1 {
            background: var(--primary);
            color: #fff;
        }
        .hot-item-content {
            flex: 1;
            min-width: 0;
        }
        .hot-item-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .hot-item-content p {
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        /* Topic card */
        .topic-card {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: 24px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all 0.3s ease;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(200, 16, 46, 0.22);
        }
        .topic-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 180px;
        }
        .topic-card-body {
            padding: 24px 28px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .topic-card-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 8px;
        }
        .topic-card-body p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .topic-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .topic-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        /* Stats mini */
        .stats-mini-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
        }
        .stat-mini-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all 0.25s ease;
        }
        .stat-mini-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .stat-mini-card .stat-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--primary);
            font-family: var(--font-num);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-mini-card .stat-label {
            font-size: 14px;
            color: var(--text-body);
            font-weight: 500;
        }
        .stat-mini-card .stat-hint {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }
        /* Subscribe CTA */
        .subscribe-box {
            background: var(--dark);
            border-radius: 16px;
            padding: 40px 36px;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 32px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .subscribe-box::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -50px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 2px dashed rgba(242, 169, 0, 0.3);
        }
        .subscribe-box h2 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .subscribe-box p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .subscribe-form input {
            padding: 12px 18px;
            border-radius: var(--radius-btn);
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 14px;
            min-width: 260px;
            transition: all 0.25s ease;
        }
        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        .subscribe-form input:focus {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-color: var(--accent);
        }
        .subscribe-form button {
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all 0.25s ease;
        }
        .subscribe-form button:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 6px 16px rgba(200, 16, 46, 0.35);
        }
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: 10px;
            overflow: hidden;
            transition: all 0.25s ease;
        }
        .faq-item:hover {
            border-color: rgba(200, 16, 46, 0.25);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            text-align: left;
            transition: all 0.25s ease;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #F5F2ED;
            color: var(--text-muted);
            font-size: 18px;
            font-weight: 600;
            flex-shrink: 0;
            transition: all 0.3s ease;
        }
        .faq-item.open .faq-question {
            color: var(--primary);
            font-weight: 700;
        }
        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.8;
        }
        /* Footer */
        .site-footer {
            background: var(--dark);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            display: flex;
        }
        .footer-brand .logo-sub {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 10px;
            transition: color 0.25s ease;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 24px;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color 0.25s ease;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-chips {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .topic-card {
                grid-template-columns: 180px 1fr;
            }
            .subscribe-box {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .subscribe-form {
                flex-wrap: wrap;
            }
            .subscribe-form input {
                min-width: 100%;
                flex: 1;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 48px 0;
            }
            .container {
                padding: 0 16px;
            }
            .category-header {
                padding: 32px 0 28px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .category-header p {
                font-size: 14px;
            }
            .section-title {
                font-size: 22px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .topic-card {
                grid-template-columns: 1fr;
            }
            .topic-card img {
                max-height: 200px;
                min-height: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .hot-item {
                padding: 12px 14px;
                gap: 10px;
            }
            .hot-item-content h4 {
                font-size: 14px;
            }
            .subscribe-box {
                padding: 28px 20px;
            }
            .subscribe-box h2 {
                font-size: 20px;
            }
            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
            }
            .logo {
                font-size: 20px;
            }
            .logo .logo-mark {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                gap: 10px;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .filter-row {
                flex-wrap: nowrap;
                overflow-x: auto;
                padding-bottom: 4px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .filter-row::-webkit-scrollbar {
                display: none;
            }
            .filter-chip {
                flex-shrink: 0;
            }
            .step-card {
                padding: 20px 16px;
            }
            .stat-mini-card .stat-num {
                font-size: 26px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 16px;
            }
        }